Flexible hose



March 19, 1935.

1'. NAKANE FLEXIBLE HOSE Fild Sept. 26; 1932 Tim sm -NATWANE atentedMar. l, 1935 NITD ST PATEN OFFICE FLEXIBLE nosE' Takashi Nakane,Yokohama, Japan, assignor to The B. F. Goodrich Company, New York, N.Y.,

This invention, relates to flexible hose and more especially to hoseprpvided with a metallic sleeve or nipple whereby it may be connected tometallic pipe or other rigid structures.

The principal objects of the invention are to provide maximum securityand strength, neatess in appearance and simplicity of construcion.

Other objects will appear from the following description and theaccompanying drawing.

In the drawing:.

Fig. 1 is aside elevation of an end of a section of hose, parts beingbroken away to show the construction in section.

Fig. 2 is a cross-section of the hose on line 2-2 of Fig. 1.

v Referring to the drawing, the numeral 1-0 designates the hose and-thenumeral 11 a nipple formed of metallic pipe; The nipple provided hitwith a long threaded portion 12 on which a correspondmgly threaded ring13 is secured. A coupling flange 14 may be secured to the exposed end ofthe nipple which is provided with a standard pipe thread 15. v

. The hose may be of any well known laminated construction, that shownbeing of a type used for suction dredging, rotary drillers and similarservice, where non-collapsing hose of large cross-section is used.

As shown, the hose comprises a layer of helically coiled flat springwire 16 over which are plies of rubber frictioned fabric 1'7, 18, 19, 20and 21 and intervening layers of rubber or other suitable composition,22, 23, and 24, all enclosed in a rubber cover 25.

Some of the plies of .fabric or other reinforcing material extend overthe ring 13 and under one or more anchoring. grommets 26 and 27 and arecufied hack over the grommets, the cuffed back portions overlying theoriginal plies and being secured thereto by cement or by lashings ofwire or cords 28 and 29 applied thereto.

the grommets 26 and 27 are made smaller in internal circumference thanthe outer circumference of the ring 13 and substantially inextensiblethe hose is securely locked over the nipple. The grommet 26 is shown asa solid metallic ring and the grommet 27' comprises a winding of wire orcord, it being understood that either or both types of grommets may beused.

' In the manufacture of a section of hose, the nipple 11 is secured uponthe end of a mandrel-of suficient length to support the length of hose,the ring 13 being in place and the flange it being removed. The wire 16is wound on the mandrel, extending over the nipple 11. Plies offrictioned fabric 17 and rubber material 22 are then applied over thewire, the rubber extending over the ring 13 and cemented thereto.

Further plies of reinforcing fabric or similar material 18 are thenapplied so as to extend well beyond the end of the finished hose.

Where solid grommet rings such as 26 are used these may now be slippedin place over the ,covering may then be applied and the hose vulcanizedin the usual manner.

I claim: .J i

1. The combination of a rigid metal sleeve member and a flexible hoseconnected thereto, said sleve having a ring on its outer surface, andsaid hose comprising laminations' of reinforcing material which extendover said ring and are cufl'ed back in adhesive engagement withthemselves to engage, in a cuffed portion of their margins, a grommetsmaller in internal diameter than the external diameter of. said ring.

2. The combination of a rigid metal sleeve member and a flexible hoseconnected thereto, said sleeve having "a removable ring member rigidlymounted on its outer surface against longitudinal displacement, and saidhose comprising laminations of reinforcing material which extend oversaid ring member, the extending margins of reinforcing material beingcuffed back in adhesive engagement with themselves to engage a grommetsmaller in internal diameter than the external diameter of said ring.

3. The combination of a rigid metal sleeve, member and a, flexible hoseconnected thereto, said sleeve being threaded to retain a ring mountedon its outer surface, and said hose comprising laminations' ofreinforcing material which extend over said ring, the extending marginsof reinforcing material being anchored terial which extend past saidannular projection in cuffed relation so as to be. adhered to themselvesand engage about a grommet member of such dimensions as to retainthehose in contact with the sleeve and prevent its separation theretrom. I

5.-The combination of a rigid metal sleeve member and a flexible hoseconnected thereto, said sleeve member being provided with an annularprojection on its outer surface, and said hosevcomprising laminations ofreinforcing material extending over said annular projection and under asolid ring member, the margins of material beyond the ring member beingcufied thereover and adhered to themselves to retain said ring.

6. The combination of a rigid metal sleeve member and a flexible hoseconnected thereto,

said sleeve member being provided with an annular projection on itsouter surface, and said hose comprising laminations of reinforcing ma--terial extending over said annular projection and rommet.

' TAKASHI NAKANE.

